2019年全国二卷文科数学word版.pdf

2019125601.A=*x|x-1+,B=*x|x2+,AB=A.(-1,+)B.(-,2)C.(-1,2)D.?2.z=i2+iz=A.1+2iB.-1+2iC.1-2iD.-1-2i3.??=2,3??=3,2|??-??|=A.2B.2C.52D.504.53532A.23B.35C.25D.155.....A.B.C.D.6.f(x)x0f(x)=ex-1x0f(x)=A.e-x-1B.e-x+1C.-e-x-1D.-e-x+17.//A.B.C.,A.8.x=4x=34f(x)=sinx0=A.2B.32C.1D.129.y2=2pxp0x23p+y2p=1p=A.2B.3C.4D.810.y=2sinx+cosx(-1)A.x-y--1=0B.2x-y-2-1=0C.2x+y-2+1=0D.x+y-+1=011.(02),2sin2=cos2+1sin=A.15B.25C.33D.25512.FCx2a2-y2b2=1a0b0OOFx2+y2=a2P,Q|PQ|=|OF|,CA.2B.3C.2D.5452013.xy{2x+3y-60x+y-30y-20z=3x-y.14..100.97200.98100.99.15.ABCABCabc.bsinA+acosB=0B=16.1...2481..2370172122236017.12ABCD-A1B1C1D1ABCDEAA1BEEC1.1BEEB1C12AE=A1E,AB=3,E-BB1C1C.18.12*an+a1=2a3=2a2+16.1*an+2bn=log2an*bn+n.19.12100y.Y,-0.200),00.20),0.200.40),0.400.60),0.600.80)22453147140%2.0.01748.60220.12F1,F2Cx2a2+y2b2=1ab0PCO1POF2C2PPF1PF2,1PF216ba.21.12f(x)=(x-1)lnx-x-1.1f(x)2f(x)=0.10222322.[4-4]10OM0000C=4sinlA4,0OMP.10=30l2MCPOMP.23.[4-5]10f(x)=|x-a|x+|x-2|x-a.1a=1f(x)02x-1f(x)0a.